After the successful creation of a Dialogflow agent, you'll be presented with a dashboard like that in the following screenshot:
On the left, you can see a menu containing the various components that make up the chatbot. This menu is going to be very useful and you should take a good look at all its contents to make sure you understand what we're referring to in the menu items. When we use sentences such as "Click on Entities", we mean we want you to click on the Entities item in this menu.
The center section will hold different content depending upon which component in the menu has been clicked on. By ...